Adjustable casing for therapeutic application of light



T F. A. ANDERSON.

ADJUSTABLE CASING FOR THERAPEUTIC APPLICATION OF LIGHT.

APPUCATION FILED APR.30| 192l- Patented Mar. 28, 1922.

2 swans-4555f I.

F. A. ANDERSON. ADJUSTABLE CASING FOR THERAPEUTIC APPLICATION OF LIGHT.

APPLICATION FILED APR 30. I9ZI.

1,41 1 ,074. nted Mar. 1922.

J] $SHEETS- F 2- UNI-TED STATE S PATENT OFFICE.

. rai'rz A. ANDERSON, or MILTON, wiscoivsm, ASSIGNOR 'ro BURDICKQ-CIABINETY COMPANY, A CORPORATION or wrsoonsm. 2 I

-ADJUSTABLE CASING r03 T ERAPEUTIC ArrmoA'rron or mean Specification of Letters Patent,

Patented Mar. 28,1922.

Application filed- April 30, 19121." Serial 10.165360. I

T all whom it may concern) Be it known that I, Fm'rz A. ANpEnsoN, a citizen of the United States, residing at Milton, in the-county ofRock and State of Visconsin, have invented certain new and useful Improvements in Adjustable Casings for Therapeutic Application of Light, of

which the following is a specification;

I members in adjusted positions, and rotatable I acters are employed to indicate similar parts.

The invention relates to adjustable casings for therapeutic application of light;

One of the objects of the invention is to provlde a convenient relatively inexpensive casing for containing a lamp, adjustable for application of light radiating therefrom, so

that the light rays may be accurately.

directed to anafi'ected part for therapeutic purposes. 1

Another object is to providea cylindrical casing closed at both ends and divided horizontally into two substantially semi-cylin drical members rotatable about each other so as to vary the size of-the light opening betwen the two members;.means to hold the together to locate the opening. 7 Other, further and more specific objects of the invention will become readily appar-' ent, to persons skilled in the art, from a consideration of the. following description, when taken in conjunction with the drawings, wherein Fig. 1 is a front elevation of the casing showing it open. 7'

Fig. 2 is a transverse section taken on line 2-2 of Fig. 1. r

Fig. 3 is an enlarged sectional view taken through the axis of one of the trunnions and the locking device.

Fig. 4 is a rear view of an auxiliary light reflector within the casing.

Fig. 5 is a side elevation of the auxiliary reflector and adjustable support therefor.

Fig. 6' shows the two members of the casing in reduced sizeclosed and mounted on its support.

In all the views the same reference char- 10 is the outer member ofthe cylindrical casing and llis the inner member, the latter being within the, former, and both members rotatable about a common axis.

A support 12 is provided with two arms 13 and 14 upon which the casing is supported and which extends into the inner;

other trunnion 18 the locking device 19 is threaded. I v j I Secured to the inner' 'member 1-11is aring 20,- having'a collar portion 21. An outwardly' threaded stud or lug 22 has a re duced part 23 which ispreferably angular in cross section to prevent itsirotation and which passes through the supportingfarm 14. A screw 24 is threaded into the reduced portion 23 and through a washer 25 and holds the collar 21 in firm contact supportingarm 14.

Secured on the threaded lug 22 is a knob 26 through which screws pass into the said lug. The inner casing member 11 is rotatable by means of this knob. Threaded on the lug 22 is a threaded'collar 18 provided with a handle 19. Thewasher 29 is placed between the end walls of the casing members 10 and 11 and another washer 30 of the same size is located on the outside of the member 10 in contact with the threaded 'collar 18. When the inner casing has been rotated by the knob 26 and it is desirable to also rotate the outer casingmember 1O, relative to the casing member, which may be with the done by pressing on a knob 31, which is 'fastened on the outer peripheryof the casing 10 and then when the members are in suitable positions they may be clamped in theirselected positions by rotating the handle 19 which clamps the members .10 and 11 tightly together and holds them by frictional engagement to the supporting frame.

The trunnion 15 is similar to the one just described with the exception that there is no locking devicev associated therewith and it is provided with a central bore which divides near its inner endinto the. perforations 32 1 bar 35 also carries outstanding brackets 40.

and 41 for supportof a lam 42 within the inner casing member 11. T e reflector and the means of adjustment form the subject matter of another application and isnot of' present interest.

Wire binding screws 43 and 4:4 constitute the lamp terminals to which the in-leading wires 16 and 17 are properly'connected;

The inner casing member 11 is provided with an "opening 45 in which is enclosed a frame 46 and to which an applicator of suitable character may be secured for the concentrated application of light to a limited area, when the two casing members are in positions toentirely enclose the light within the cylinder-thus formed. The light also may be projected from the interior of the casing through the space between the edges of adjacent walls of the two members when they are separated to the desired extent.

The supporting arms 13 and 14 are surrounded with soft yielding shoes or cushj' ions 47 and 48 against the edges ofwhich the respective: casing members may: strike in order to prevent any resultant noise. While I have herein shown a single embodiment of my invention for the purpose 4 of clear disclosure, it will be manifest to within the other; a support, whereon one member may be rotated about the other, and

means to lock the members in relativelyadjusted positions; 1 V I 2. A lamp casing for containing a lamp comprising a cylinder closed at its ends and divided into two rotatable members one within the other; a trunnion at each end of said members about the axis of which both members are rotatable; a support having two arms secured to the respective trunnions and means to lock the memberstogether at one ofsaid tr'unnions. i In testimony whereof I hereunto-subscribe my name.

,FRITZ A.ANDERSON.1 

